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Predicate Provider problem
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class PlayingPredicateProvider extends env.predicates.PredicateProvider | |
constructor: (@framework) -> | |
parsePredicate: (input, context) -> | |
kodiDevices = _(@framework.deviceManager.devices).values() | |
.filter((device) => device.hasAttribute( 'state')).value() | |
device = null | |
state = null | |
negated = null | |
match = null | |
stateAcFilter = (v) => v.trim() isnt 'not playing' | |
M(input, context) | |
.matchDevice(kodiDevices, (next, d) => | |
next.match([' is', ' reports', ' signals']) | |
.match([' playing', ' stopped',' paused', ' not playing'], {acFilter: stateAcFilter}, (m, s) => | |
if device? and device.id isnt d.id | |
context?.addError(""""#{input.trim()}" is ambiguous.""") | |
return | |
device = d | |
negated = (s.trim() isnt "playing") | |
match = m.getFullMatch() | |
) | |
) | |
if match? | |
assert device? | |
assert negated? | |
assert typeof match is "string" | |
return { | |
token: match | |
nextInput: input.substring(match.length) | |
predicateHandler: new PlayingPredicateHandler(device, negated) | |
} | |
else | |
return null | |
class PlayingPredicateHandler extends env.predicates.PredicateHandler | |
constructor: (@device, @negated) -> | |
setup: -> | |
@playingListener = (p) => | |
env.logger.debug (if @negated then not p else p) | |
@emit 'change', (if @negated then not p else p) | |
@device.on 'state', @playingListener | |
super() | |
getValue: -> | |
return @device.getUpdatedAttributeValue('state').then( | |
(p) => (if @negated then not p else p) | |
) | |
destroy: -> | |
@device.removeListener "state", @playingListener | |
super() | |
getType: -> 'state' |
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